The Liber chronicarum, a universal history compiled from older and contemporary sources by the Nuremberg doctor, humanist, and bibliophile Hartmann Schedel (1440–1514), is one of the most densely illustrated and technically advanced works of early printing. It contains 1809 woodcuts produced from 645 blocks. The Nuremberg entrepreneur Sebald Schreyer and his brother-in-law, Sebastian Kammermeister, financed the production of the book. Michael Wolgemut and his son-in-law Wilhelm Pleydenwurff executed the illustrations in around 1490, a time when their workshop was at its artistic peak and the young Albrecht Dürer was ...